Alexander III, AV stater. Mesembria mint. ca 250-175 BC. 17.2 mm, 8.46 g.

Head of Athena right wearing Corinthian helmet with crest
BASILEWS ALEXANDROY, Nike standing left, holding wreath and stylis. Corinthian helmet right in outer left field, PA monogram in lower left field. 

Price 993; Ashmolean HCR23311; Mueller 434; Anadol hoard 438.

Courtesy of the Ashmolean coin collection.